Image transmission integrated control

Some time ago, a certain cad guy in the group drew a loli remote control shell with an integrated image transmission and reception screen, and sent me a copy of the cad source file. His cad was for laser cutting basswood boards. I was thinking, why not just Convert this into a 3D model so that it can be easily printed with a 3D printer. So I first drew a picture based on the CAD file, and turned to the slicing software to see that a 30% fill rate is about 400 grams. If I find someone online to print it, it costs 50 cents per gram, which would cost 200 yuan. I think it is too much. It was too expensive, so I thought I might as well draw it from scratch, and so I came up with this project.
There are very few online control shells that are made public. Most of them are drawn by themselves for personal use or for sale. In the spirit of open source, this control shell is open sourced, hoping to add some bricks and tiles to loli control. The battery compartment can hold two 2S 18650 battery boxes, and there is currently no charging port. At the same time, I drew the placement position of the image transmission screen but there is no corresponding image transmission motherboard, so I placed it randomly and fixed it first.
Note: Because I don’t have a 3D printer myself, and I currently have no plans to make another control, I have not verified this control shell, it is for reference only. The thickness of each board currently painted is 2mm. I wonder if it is too thin? If anyone finds any problems after printing, I hope you can give us feedback so that improvements can be made. If anyone makes improvements to the files here, I hope it will remain open source, thank you.

The source files are on gitee, please download them by yourself, and the matching button PCB is on Lichuang eda, please use them by yourself.
https://gitee.com/wooddoor/model-airplane-remote-control-box